---
title: "A student introduces sulfur dioxide and oxygen into a rigid vessel maintained at a constant temperature. The system reaches equilibrium according to the equation  \\(2\\text{SO}_2\\text{(g)}+\\text{O}_2\\text{(g)}\\rightleftharpoons2\\text{SO}_3\\text{(g)}\\)  The measured equilibrium partial pressures are shown below.  | Gas | Equilibrium partial pressure (atm) | |—–|————————————| | \\(\\text{SO}_2\\) | \\(0.50\\) | | \\(\\text{O}_2\\) | \\(0.40\\) | | \\(\\text{SO}_3\\) | \\(0.20\\) |  What is the value of \\(K_p\\) for the reaction at this temperature?"
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url: "https://nerd-notes.com/ubq/119368/"
date_modified: "2026-08-19T12:40:01+00:00"
---

# A student introduces sulfur dioxide and oxygen into a rigid vessel maintained at a constant temperature. The system reaches equilibrium according to the equation

\(2\text{SO}_2\text{(g)}+\text{O}_2\text{(g)}\rightleftharpoons2\text{SO}_3\text{(g)}\)

The measured equilibrium partial pressures are shown below.

| Gas | Equilibrium partial pressure (atm) |
|—–|————————————|
| \(\text{SO}_2\) | \(0.50\) |
| \(\text{O}_2\) | \(0.40\) |
| \(\text{SO}_3\) | \(0.20\) |

What is the value of \(K_p\) for the reaction at this temperature?

A student introduces sulfur dioxide and oxygen into a rigid vessel maintained at a constant temperature. The system reaches equilibrium according to the equation

\(2\text{SO}_2\text{(g)}+\text{O}_2\text{(g)}\rightleftharpoons2\text{SO}_3\text{(g)}\)

The measured equilibrium partial pressures are shown below.

| Gas | Equilibrium partial pressure (atm) |
|-----|------------------------------------|
| \(\text{SO}_2\) | \(0.50\) |
| \(\text{O}_2\) | \(0.40\) |
| \(\text{SO}_3\) | \(0.20\) |

What is the value of \(K_p\) for the reaction at this temperature?

- **A.** \(0.20\)
- **B.** \(0.40\)
- **C.** \(2.0\)
- **D.** \(2.5\)

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/119368/*